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Appendix E - Detailed Description of Alternative 1: DoEIR1,-2001-i t Full Removal and Disposal Rev. e1 DMft 1; ^ RsSilindStrikeout 2 E.1.4.1.3 D&D of 221-U and 221-UA Tank Farms. These tank farms are within the 3 operational area needed for demolition access to 221-U and the railroad tunnel. The tank, piping, 4 and equipment would be size reduced, wrapped, and placed in containers for hauling to ERDF. 5 6 E.1.4.1.4 D&D Stairways on 221-U Building. Eight stairwells on the northwest side of 7 221-U are light construction and would be dcmolished using typical building demolition 8 techniques. Ten stairwells on the southeast side of 221-U are thick wall, lightly reinforced 9 concrete construction. The heavier construction of these stairwells would be factored into the 10 demolition costs. Any contamination found in the stairwells on the canyon's southeast side 11 would be fixed in place prior to demolition. All stairwell demolition waste would be disposed at 12 ERDF. 13 14 E.1A.2 Remedlate Waste <strong>Site</strong>s Within the Footprint of 221-U Excavation. Extensive 15 earthwork and excavation is required to prepare for crane and other demolition equipment access 16 to 221-U. Waste sites that are identified as part of Assumption 4 at the beginning of this 17 appendix that are located within the footprint of these excavation areas would be removed as part 18 of the demolition activities. All remediation wastes would be disposed at ERDF. 19 20 E.1.4.3 Excavations to Prepare Working Area Adjacent to 221-U. The northwest side r`21 (271-U and rail tunnel) of the building would be leveled and compacted to allow removal of the 22 canyon roof with a large mobile crane. This leveled area would allow the crane to travel the 23 length of the building and provide sufficient area to lay down roof panels. This excavation 24 would be in addition to that done during demolition of the rail tunnel. 25 26 Fill material would be removed from the southeast face of the canyon to leave a 6-m-wide work 27 area at the level of the canyon foundation mat. This working area would be needed for crane and 28 demolition equipment access. 29 30 E-1S Manage Hazardous Materials 31 32 Dangerous waste, asbestos, polychlorinated biphenyls, and other hazardous materials would be 33 removed from all areas of the complex and managed in accordance with ARARs. All waste 34 ataterialswaste would be sampled, tested, designated as required by ARARs, and treated prior to 35 disposal. Products consisting of orcontaining hazardous materials would be used and managed 36 in accordance with their respective Material Safety Data Sheets. WestefnetefielsWaste would be 37 treated as required. 38 39 A temporary waste accumulation laydown area would be established to facilitate shipment and 40 disposal activities. This area would conform to established requirements for the maintenance, 41 accountability, inventory, labeling, and transportation of waste to approved disposal facilities. 42 to-N43 Final Feasibility Study jor the Canyon Disposition Initiative (221•U Facility) une'0 7 E-11
Appendix E - Detailed Description of Alternative 1: DoEtu..-2oo1-11 I Full Removal and Disposal Rev. e 1 DtaR fi ^ RedlindStrikeout I E.2 OPERATE THE COMPLEX 2 3 Operation of the complex for Alternative I refers specifically to demolition and waste disposal 4 operations associated with complete removal of the 221-U Building. In previous steps, the area 5 surrounding 221-U would have been prepared to support building demolition, all equipment 6 within the building would have been removed, and exposed surfaces inside the canyon would 7 have been decontaminated or a fixative applied. The steps to operate the complex are discussed 8 in the following subsections. 9 10 E.2.1 D&D 221-U Building 11 12 Conventional methods and technologies, such as wrecking balls and shears, are not suited for 13 demolishing this concrete structure and are not effective when wall or floor thickness exceeds 14 0.9 m. The 221 -U Facility contains structural components that typically exceed 1.5 m (5 ft) in 15 thickness. The recommended demolition method is to cut the building apart using diamond wire 16 saws. Most pieces would be cut to meet the ERDF size restrictions (assume 90 metric tons 17 [100 tons]) and would be set directly on a transporter and moved to the disposal site. Large 18 elevated pieces that would be hazardous to demolish due to their elevation and/or support 19 function in the building (e.g., roof panels) would be removed intact and set on the ground for 20 further size reduction. t^21 22 The canyon facility can be characterized as mass concrete, and other demolition methods suitable 23 to thick, lightly reinforced concrete were considered. Controlled blasting was considered to be 24 impractical because it would cause considerable dust and debris, which could be difficult to 25 control and could spread radioactive contamination. Additionally, it would probably disturb 26 fixative coatings from adjacent areas. Stitch drilling would take longer and is more labor 27 intensive, but could be used for small areas that are difficult to access with the diamond wire 28 saw. Core drilling holes that are filled with expansive slurry (e.g., "Bristae' demolition 29 compound) could also be used for splitting the foundation mat. 30 31 The diamond wire cutting technique uses a small quantity of water to cool and lubricate the wire. 32 The waste water could be channeled into building's drain system, where it could be collected for 33 later removal. Using this approach to demolition would make use of the segmented construction 34 of the canyon structure. The canyon consists of 20 independent segments, each about 12 m 35 (40 ft) long. Adjacent roof panels are keyed with a stair-step joint similar to the cover block 36 edges, which would make it feasible to cut the canyon into pieces that are about 12 m(40 ft) 37 long. 38 39 E.2.1.1 Mobilize and Erect Cranes. Cranes necessary for removal of roof panels would be 40 brought to the site and erected. These cranes would be used to remove building sections as they 41 are cut by the diamond wire saws. 42 (`,43 E.2.1.2 Remove Roof Sections. Removal would start with the end wall at the building's north 44 end. The end walls are unreinforced, apparently to make future additions easier. The northeast 45 end wall should be removed first because the roof removal would begin at that end of 221-U. Final Feasibility Study jor the Canyon pispos(tionln8iative(221-U Facitity) iwc :.00-1 E-12
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AR TARGET SHEET The following docum
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(^N r^ r Proposed Plan for the Cany
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(^N (0-^, (^N 1 2 3 r• • .`•
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^ (^N t^ the steHitFths+amedielaeti
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o"N DOF/RIr2001-29 Draft D Redline/
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(^N i0,"% / ' DOF/RL-2001-29 Draft
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I f^ ^ DOE!RL-2001-29 Ikaft D Redli
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! ' t^ Project Prepare the existing
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f ' ^ rN 100 I Noise, Visual, and A
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Page 45 and 46: Appendix D- Slope Stability Analysi
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^N r^ 1 n DOF/RLr2061-1 l ' Rev. I
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1 ^ (^N ^ DoFJRL-M-t t ^ Rev. I Dnf
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Appendix G -Detailed Description of
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Appendix G - Detailed Description o
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Appendix G- Detailed Description of
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o"^, Appendix G - Detailed Descript
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Appendix G -Detailed Description of
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Appendix G- Detailed Description of
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^ ^ t"'^N 1 2 DOElRL-2001-I1 Rev. 9
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t^N (M"N Final Feasibifity Stady ja
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,.r.. . Appendix H - Detailed Descr
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(^\ Appendix H - Detailed Descripti
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Appendix N- Detailed Description of
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Appendix It - Detailed Description
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^N i ' (0-1% C Appendix H- Detailed
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f^ ^ DOFJRL-2001-I I Rev. N raft Rc
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f^ ^ 1 2 DOFlRI.-2001-11 Rev. pI af
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I ,.,. , ... . DOFJRI.-2001-11 Appe
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^ DOF/RL-2001-11 I Appendix I - Dec
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^ r^, TABLES DOFJRIr2001-11 • Rev
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^ Appendix J- Applicable or Relevan
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t^ ^ Appendix J-Applicable or Relev
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^ Appendia J- Applicable or Relevan
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